Measurement of the electric potential and the magnetic field in the shifted analysing plane of the KATRIN experiment

The projected sensitivity of the effective electron neutrino-mass measurement with the KATRIN experiment is below 0.3 eV (90 % CL) after five years of data acquisition. The sensitivity is affected by the increased rate of the background electrons from KATRIN's main spectrometer. A special shift...

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Hauptverfasser:	Behrens, J, Beisenkötter, J, Biondi, Y, Block, F, Bobien, S, Böttcher, M, Bornschein, B, Bornschein, L, Carminati, M, Chilingaryan, S, Daniel, B. A, Debowski, K, Barrero, D. Díaz, Doe, P. J, Dragoun, O, Drexlin, G, Edzards, F, Eitel, K, Ellinger, E, Felden, A, Fengler, C, Formaggio, J. A, Fränkle, F. M, Gavin, A. S, Gil, W, Glück, F, Grössle, R, Hannen, V, Hasselmann, L, Helbing, K, Heyns, S, Hickford, S, Hiller, R, Hillesheimer, D, Hinz, D, Höhn, T, Huber, A, Jansen, A, Khosonthongkee, K, Kopmann, A, Kovač, N, Krause, H, La Cascio, L, Lasserre, T, Lauer, J, Le, T. L, Lebeda, O, Lehnert, B, Lokhov, A, Machatschek, M, Mark, M, Marsteller, A, McMichael, K, Melzer, C, Mertens, S, Mostafa, J, Nava, A, Neumann, H, Niemes, S, Pavan, M, Poon, A. W. P, Poyato, J. M. L, Pozzi, S, Priester, F, Ráliš, J, Robertson, R. G. H, Röllig, M, Sack, R, Salomon, R, Schäfer, P, Schlösser, K, Schlüter, L, Schneidewind, S, Schürmann, J, Schwemmer, A, Schwenck, A, Siegmann, D, Simon, F, Spanier, F, Spreng, D, Sreethawong, W, Steidl, M, Štorek, J, Stribl, X, Sturm, M, Jerome, N. Tan, Thorne, L. A, Thümmler, T, Titov, N, Tkachev, I, Urban, K, Vénos, D, Welte, S, Wendel, J, Wiesinger, C, Wolf, J, Wüstling, S, Xu, W, Zadorozhny, S, Zeller, G
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Instrumentation and Detectors
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Zusammenfassung:	The projected sensitivity of the effective electron neutrino-mass measurement with the KATRIN experiment is below 0.3 eV (90 % CL) after five years of data acquisition. The sensitivity is affected by the increased rate of the background electrons from KATRIN's main spectrometer. A special shifted-analysing-plane (SAP) configuration was developed to reduce this background by a factor of two. The complex layout of electromagnetic fields in the SAP configuration requires a robust method of estimating these fields. We present in this paper a dedicated calibration measurement of the fields using conversion electrons of gaseous $^\mathrm{83m}$Kr, which enables the neutrino-mass measurements in the SAP configuration.
DOI:	10.48550/arxiv.2408.07022